结论MMP - 2、MMP - 9、TIMP - 1在人睾丸精原细胞瘤的浸润转移过程中起重要作用，有可能成为估计预后的指标之一。
Conclusion MMP-2, MMP-9 and TIMP-1 play an important role in the infiltrative metastasis of seminoma and may act as one of the factors to evaluate prognosis.
目的报道21例睾丸原发性淋巴瘤，并分析其临床表现，形态特征和免疫表型。
Objective To investigate a group of 21 cases of primary testicular lymphoma and analyze their clinical manifestations, morphological features and immunophenotypes of the lymphoma.
目的报道10例睾丸原发性恶性淋巴瘤，并分析其临床表现、形态学特征及免疫表型。
Objective To report a group of 10 cases of primary malignant lymphoma of the testicle and analyze their clinical manifestations, morphological features and immunophenotypes of the lymphoma.
目的：探讨CD117在睾丸生殖细胞肿瘤中的表达及其在鉴别睾丸精原细胞瘤和非精原细胞瘤中的价值和生物学意义。
Objective:To evaluate the expression of CD117 in human testicular germ cell tumors and its value in the differential diagnosis of seminoma and nonseminoma.
结论全反式维甲酸可以抑制睾丸卵黄囊瘤细胞的增殖，抑制肿瘤增殖机制可能与下调VEGF的表达有关。
ConclusionATRA could inhibit proliferation of yolk sac tumor cell line, and down regulation of VEGF could be the inhibitory mechanism of ATRA on yolk sac tumor cell line in vitro.
结论全反式维甲酸可以抑制睾丸卵黄囊瘤细胞的增殖，抑制肿瘤增殖机制可能与下调VEGF的表达有关。
ConclusionATRA could inhibit proliferation of yolk sac tumor cell line, and down regulation of VEGF could be the inhibitory mechanism of ATRA on yolk sac tumor cell line in vitro.
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